Clinical performance of a highly cross-linked polyethylene at two years in total hip arthroplasty: A randomized prospective trial

John M. Martell, James J. Verner, Stephen J. Incavo

Research output: Contribution to journalArticle

172 Scopus citations

Abstract

We report the 2-year results for a prospective randomized trial comparing highly cross-linked with standard polyethylene in total hip replacements. In our study, 46 hips were available for radiographic analysis at 2- and 3-year follow-up. Femoral bearings were 28-mm cobalt chrome with the polyethylene insert randomly selected at the time of implantation to be highly cross-linked polyethylene (Crossfire; Stryker Howmedica Osteonics, Allendale, NJ) or standard polyethylene (N2/Vac, Stryker Howmedica Osteonics). Polyethylene wear rates were measured based on anterior-posterior (AP) and lateral pelvis radiographs at 6 weeks and at yearly intervals using a validated computer-assisted edge-detection method. Wear rates between the 2 groups were compared using the nonparametric Mann-Whitney test at the 95% level. A significant reduction in 2- and 3-dimensional linear wear rates (42% and 50%) was found in the highly cross-linked group (P = .001 and P = .005).

Original languageEnglish (US)
Pages (from-to)55-59
Number of pages5
JournalJournal of Arthroplasty
Volume18
Issue number7 SUPPL. 1
DOIs
StatePublished - Jan 1 2003

Keywords

  • Arthroplasty
  • Cross-linked
  • Hip
  • Polyethylene
  • Wear

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

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